simplipy/util/string.py
"""Define various string utilities."""
import re
def convert_to_underscore(string: str) -> str:
"""Convert thisString to this_string.
Args:
string: The string to convert.
Returns:
A converted string.
"""
first_pass = re.sub("(.)([A-Z][a-z]+)", r"\1_\2", string)
return re.sub("([a-z0-9])([A-Z])", r"\1_\2", first_pass).lower()